Concrete construction



Feb. 26, 1929.

0. A. HOLLIS CONCRETE c us'rRUc'noN Original Filed Sept. 10, 1924 Patented Feb. 26, 19.29.

UNITED STATES I 1,703,819 PATENT omen- OTIS A. HOLLIS, or KNOXVILLE, PENNSYLVANIA; OLIVE L. HOLLIS AND JOHN r;

' SANKEY EXECUTORS or s InoTIs A. HOLLIS, DECEASED;

V CONCRETE CONSTRUCTION. I

. 'App lication filed September 10, 1924, Serial No. 736,863. Renewed February 9, 1928.

The object which I have in view isan improvement in the methods of concrete construction whereby the building of the same may be greatly facilitated and cheapenedf For this purpose I provide a new and improved matrix for concrete construction composed of superimposed courses of matrix boards which form the vertical walls, of the matrix and which are held in position by means of transversely disposed horizontal tie bars whose protruding ends are engaged by vertically disposed stay'members which support the matrix boards from without,

In matrices of this typept-he present prac tice has been to use for the tie-members metal plates whose protruding ends are. perforated to receive metal stay rods, and after the concrete isset and the 'matrix boards and stay rods are removed, these metal plates are knocked lengthwise out of the wall, leaving transverse openings in the latter which must be subsequently plugged with concrete. "i

In my improved method of concrete construction I use-tie members of wire whose protruding-ends are looped to receivethe stay members, which may be wooden lath, and after the concrete is set and the matrix boards and stay. members are removed, I clip off protruding portions of the tie members, leaving the bodies of the same embedded in the concrete wall.

I have invented new and improved tie members for use in this connection.

In the accompanying drawings, Fig. 1 is a view in perspective of a concrete wall which is being erected in accordance with my system; Fig. 2 is an enlarged vertical section of the same; Fig. 3 is a broken side elevation of the finished wall showing some of the tie members clipped off flush with the wall and others unclipped, and Fig. i is an enlarged plan view of one of the spreader members.

The following is a detailed description of the drawing.

The wall is built up step by step by means of inner end outer matrix boards A which are held in position during pouring, by means of tie members B and vertical stays C. Thus in Fig. 1, I show three superimposed courses of A, the next above at A and the top course A The concrete D is shown poured to the top of the matrix boards A, the matrix V laid horizontally, transverse of the wall,

-bers C are slipped throughthe protruding 1 are then 'inserted between the matrix boards Fig; 1 to avoid interruption in the support of matrix boards, the bottom course indicated at the ends ofthe wire twisted, welded 01 otherwise secured to hold the shape. .These tie members are of sufiicientlen so that when their looped ends will protrude sufliciently beyond the matrix boards to .receive the vertical stay members which may be metal rods, but which may be more conveniently and cheaply wooden lath. A I I Y T In building the wall I first form the/footing or foundation E. In the drawingsthis base is shown cast of sufficient width tovsupport the bottom edges of the lowermost matrix boards A, as shown at 1 in Figs. 1 and 2. The top of the foundation or footing course is levelled off horizontally. The bot tom row of tiemembers B are then laid on the top ofthe base course,'the matrix boards A are placed in position and, the'stayjmemloopends of the members B. Additional tie members B are then slipped down over the stay rods-andrest onthe top of the matrix boards A. Vooden struts such as F in Fig.

to hold them'vertically against the stay. rods, The concrete D is then poured between the matrix boardsA' and smoothed off level to tli e" top ofthematrix boards. Before the cavity between the matrix 'boards 'Af is completely filled, .thewooden struts F are ,knocked out and their place filled with the concrete. v i The next course of matrix boards A is now placed in position, and additional tie members B are placed on top thereof with their ends engaging the stay members C, and

the struts Fare interposed between the mathe adjacent courses of matrix boards...

As the concrete sets and hardens the matrix boards may be removed in turn from below, by slipping out or breaking away the stay. rods and lifting off the matrix boards, leaving the ends of the tie members protruding, as 110 shown'iat the right in Fig. 3. The protruding crete.

ends of the tie members are then snipped ott' flush with the concrete of the wall as shown at theleft in Fig. 3-, leaving the body of thetie members permanently embeddedin thecoin In Fig. 4 I show member formed of Wire and consist-mg oi the longitudinal side portions 2, the transverse? end portions 3 andthe intermediate longitudinal leg-4: This form of tie member-pro vides means for securing thereto two stay 'rods at eacl 'end. The tie members maybe conveniently; made by bendlng up the W re to the proper form and then welding or otherwise securing the ends together.- Thus the Wire-is shown'welded together at 5I It is of'course-apparent that the tie members :may

be provided With any form of looped end into 'which stay members may be inserted or by,

which theymay-be secured, but Ipret'er the particular embodiment of the tie member Whichls'how in the drawings,

lt-isevident from the foregoing that my invention greatly facilitates the building of a'concrete 'wall, as thewire tie members can be quickly laid in position and afterthe matrix boards are removed their protruding ends a maybe easilyfsnipped off. No extra labor-is thus required to plug the holes in the Wall oi the concrete, thus effecting a materialsaving in'time and labor, and insuring a SOlMl va'll. My improved form'of spreader memberis much less expensive than the metal plate, and the assemblage and disassemblage a of the matrix is a'much quicker operation than Where metal tie platesand metalstayrods are used. Again, the permanent embedding of the bodies of the tie members in the concrete wall 1 acts to; reinforce the 'Wall instead of 'Weakenin'g'it, as Where transverse apertures a convenient form of tie" are'leftby the knocking out of the tie members, even when the latter are plugged as Well as possible with concrete. The useot my 1m- ,proved tie members also enables meto use or- V di nary Wooden-lath for theordinary stay members, thereby working an additional economy,

These laths or other equivalent members of relatively yielding material, have a further advantage over metal rods hichis 01' very substantial practical importance. When the formiof matrix is assei'nbled 'as shown in Fig.

1, and the struts F are positioned to space the equivalent'yielding material into which the, tie members can bits. 1 The laths-areals'overy positively'held by the bite ofthe wireagainst accidental displacement.

What I desire toclaimisr '1 For use for the purposes described-in con-- nectionwith concrete construction, tie members' formed ofbent Wire-and comprised oi three parallel spaced apart legs, and end members connectingthe ends of said legs substantially asdescribed.

Signed at Pittsburgh, Pa.,: 8th day-of Sept, 1924;. r a

- 7 VOTISAIHOLLIS], 

